]>
Commit | Line | Data |
---|---|---|
73459f73 RM |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: psloop - Main AML parse loop | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
da6f8320 | 8 | * Copyright (C) 2000 - 2018, Intel Corp. |
73459f73 RM |
9 | * All rights reserved. |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or without | |
12 | * modification, are permitted provided that the following conditions | |
13 | * are met: | |
14 | * 1. Redistributions of source code must retain the above copyright | |
15 | * notice, this list of conditions, and the following disclaimer, | |
16 | * without modification. | |
17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer | |
18 | * substantially similar to the "NO WARRANTY" disclaimer below | |
19 | * ("Disclaimer") and any redistribution must be conditioned upon | |
20 | * including a substantially similar Disclaimer requirement for further | |
21 | * binary redistribution. | |
22 | * 3. Neither the names of the above-listed copyright holders nor the names | |
23 | * of any contributors may be used to endorse or promote products derived | |
24 | * from this software without specific prior written permission. | |
25 | * | |
26 | * Alternatively, this software may be distributed under the terms of the | |
27 | * GNU General Public License ("GPL") version 2 as published by the Free | |
28 | * Software Foundation. | |
29 | * | |
30 | * NO WARRANTY | |
31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR | |
34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
41 | * POSSIBILITY OF SUCH DAMAGES. | |
42 | */ | |
43 | ||
73459f73 | 44 | /* |
4d0b4af9 MK |
45 | * Parse the AML and build an operation tree as most interpreters, (such as |
46 | * Perl) do. Parsing is done by hand rather than with a YACC generated parser | |
47 | * to tightly constrain stack and dynamic memory usage. Parsing is kept | |
48 | * flexible and the code fairly compact by parsing based on a list of AML | |
49 | * opcode templates in aml_op_info[]. | |
73459f73 RM |
50 | */ |
51 | ||
52 | #include <acpi/acpi.h> | |
e2f7a777 | 53 | #include "accommon.h" |
ab6c5733 | 54 | #include "acinterp.h" |
e2f7a777 LB |
55 | #include "acparser.h" |
56 | #include "acdispat.h" | |
57 | #include "amlcode.h" | |
9cf7adec | 58 | #include "acconvert.h" |
73459f73 RM |
59 | |
60 | #define _COMPONENT ACPI_PARSER | |
4be44fcd | 61 | ACPI_MODULE_NAME("psloop") |
73459f73 | 62 | |
4d0b4af9 | 63 | /* Local prototypes */ |
4d0b4af9 MK |
64 | static acpi_status |
65 | acpi_ps_get_arguments(struct acpi_walk_state *walk_state, | |
66 | u8 * aml_op_start, union acpi_parse_object *op); | |
67 | ||
7f0c826a | 68 | static void |
9a884ab6 LM |
69 | acpi_ps_link_module_code(union acpi_parse_object *parent_op, |
70 | u8 *aml_start, u32 aml_length, acpi_owner_id owner_id); | |
7f0c826a | 71 | |
4d0b4af9 MK |
72 | /******************************************************************************* |
73 | * | |
74 | * FUNCTION: acpi_ps_get_arguments | |
75 | * | |
76 | * PARAMETERS: walk_state - Current state | |
77 | * aml_op_start - Op start in AML | |
ba494bee | 78 | * op - Current Op |
4d0b4af9 MK |
79 | * |
80 | * RETURN: Status | |
81 | * | |
82 | * DESCRIPTION: Get arguments for passed Op. | |
83 | * | |
84 | ******************************************************************************/ | |
85 | ||
86 | static acpi_status | |
87 | acpi_ps_get_arguments(struct acpi_walk_state *walk_state, | |
88 | u8 * aml_op_start, union acpi_parse_object *op) | |
89 | { | |
90 | acpi_status status = AE_OK; | |
91 | union acpi_parse_object *arg = NULL; | |
7f0c826a | 92 | const struct acpi_opcode_info *op_info; |
4d0b4af9 MK |
93 | |
94 | ACPI_FUNCTION_TRACE_PTR(ps_get_arguments, walk_state); | |
95 | ||
ce87e09d BM |
96 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, |
97 | "Get arguments for opcode [%s]\n", | |
98 | op->common.aml_op_name)); | |
99 | ||
4d0b4af9 MK |
100 | switch (op->common.aml_opcode) { |
101 | case AML_BYTE_OP: /* AML_BYTEDATA_ARG */ | |
102 | case AML_WORD_OP: /* AML_WORDDATA_ARG */ | |
103 | case AML_DWORD_OP: /* AML_DWORDATA_ARG */ | |
104 | case AML_QWORD_OP: /* AML_QWORDATA_ARG */ | |
105 | case AML_STRING_OP: /* AML_ASCIICHARLIST_ARG */ | |
106 | ||
107 | /* Fill in constant or string argument directly */ | |
108 | ||
109 | acpi_ps_get_next_simple_arg(&(walk_state->parser_state), | |
110 | GET_CURRENT_ARG_TYPE(walk_state-> | |
111 | arg_types), | |
112 | op); | |
113 | break; | |
114 | ||
115 | case AML_INT_NAMEPATH_OP: /* AML_NAMESTRING_ARG */ | |
116 | ||
89438f96 BM |
117 | status = acpi_ps_get_next_namepath(walk_state, |
118 | &(walk_state->parser_state), | |
119 | op, | |
120 | ACPI_POSSIBLE_METHOD_CALL); | |
4d0b4af9 MK |
121 | if (ACPI_FAILURE(status)) { |
122 | return_ACPI_STATUS(status); | |
123 | } | |
124 | ||
125 | walk_state->arg_types = 0; | |
126 | break; | |
127 | ||
128 | default: | |
129 | /* | |
130 | * Op is not a constant or string, append each argument to the Op | |
131 | */ | |
1fad8738 BM |
132 | while (GET_CURRENT_ARG_TYPE(walk_state->arg_types) && |
133 | !walk_state->arg_count) { | |
83482f75 | 134 | walk_state->aml = walk_state->parser_state.aml; |
4d0b4af9 | 135 | |
9cf7adec BM |
136 | switch (op->common.aml_opcode) { |
137 | case AML_METHOD_OP: | |
138 | case AML_BUFFER_OP: | |
139 | case AML_PACKAGE_OP: | |
140 | case AML_VARIABLE_PACKAGE_OP: | |
141 | case AML_WHILE_OP: | |
142 | ||
143 | break; | |
144 | ||
145 | default: | |
146 | ||
147 | ASL_CV_CAPTURE_COMMENTS(walk_state); | |
148 | break; | |
149 | } | |
150 | ||
4d0b4af9 MK |
151 | status = |
152 | acpi_ps_get_next_arg(walk_state, | |
153 | &(walk_state->parser_state), | |
154 | GET_CURRENT_ARG_TYPE | |
155 | (walk_state->arg_types), &arg); | |
156 | if (ACPI_FAILURE(status)) { | |
157 | return_ACPI_STATUS(status); | |
158 | } | |
159 | ||
160 | if (arg) { | |
4d0b4af9 MK |
161 | acpi_ps_append_arg(op, arg); |
162 | } | |
163 | ||
164 | INCREMENT_ARG_LIST(walk_state->arg_types); | |
165 | } | |
166 | ||
a62a7117 BM |
167 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, |
168 | "Final argument count: %u pass %u\n", | |
169 | walk_state->arg_count, | |
170 | walk_state->pass_number)); | |
171 | ||
7f0c826a LM |
172 | /* |
173 | * Handle executable code at "module-level". This refers to | |
174 | * executable opcodes that appear outside of any control method. | |
175 | */ | |
176 | if ((walk_state->pass_number <= ACPI_IMODE_LOAD_PASS2) && | |
4d0b4af9 MK |
177 | ((walk_state->parse_flags & ACPI_PARSE_DISASSEMBLE) == 0)) { |
178 | /* | |
179 | * We want to skip If/Else/While constructs during Pass1 because we | |
180 | * want to actually conditionally execute the code during Pass2. | |
181 | * | |
182 | * Except for disassembly, where we always want to walk the | |
183 | * If/Else/While packages | |
184 | */ | |
185 | switch (op->common.aml_opcode) { | |
186 | case AML_IF_OP: | |
187 | case AML_ELSE_OP: | |
188 | case AML_WHILE_OP: | |
7f0c826a LM |
189 | /* |
190 | * Currently supported module-level opcodes are: | |
191 | * IF/ELSE/WHILE. These appear to be the most common, | |
192 | * and easiest to support since they open an AML | |
193 | * package. | |
194 | */ | |
195 | if (walk_state->pass_number == | |
196 | ACPI_IMODE_LOAD_PASS1) { | |
9a884ab6 LM |
197 | acpi_ps_link_module_code(op->common. |
198 | parent, | |
199 | aml_op_start, | |
200 | (u32) | |
201 | (walk_state-> | |
7f0c826a LM |
202 | parser_state. |
203 | pkg_end - | |
9a884ab6 | 204 | aml_op_start), |
7f0c826a LM |
205 | walk_state-> |
206 | owner_id); | |
207 | } | |
208 | ||
4d0b4af9 MK |
209 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, |
210 | "Pass1: Skipping an If/Else/While body\n")); | |
211 | ||
212 | /* Skip body of if/else/while in pass 1 */ | |
213 | ||
214 | walk_state->parser_state.aml = | |
215 | walk_state->parser_state.pkg_end; | |
216 | walk_state->arg_count = 0; | |
217 | break; | |
218 | ||
219 | default: | |
7f0c826a LM |
220 | /* |
221 | * Check for an unsupported executable opcode at module | |
222 | * level. We must be in PASS1, the parent must be a SCOPE, | |
223 | * The opcode class must be EXECUTE, and the opcode must | |
224 | * not be an argument to another opcode. | |
225 | */ | |
226 | if ((walk_state->pass_number == | |
227 | ACPI_IMODE_LOAD_PASS1) | |
228 | && (op->common.parent->common.aml_opcode == | |
229 | AML_SCOPE_OP)) { | |
230 | op_info = | |
231 | acpi_ps_get_opcode_info(op->common. | |
232 | aml_opcode); | |
233 | if ((op_info->class == | |
234 | AML_CLASS_EXECUTE) && (!arg)) { | |
235 | ACPI_WARNING((AE_INFO, | |
00eb3255 BM |
236 | "Unsupported module-level executable opcode " |
237 | "0x%.2X at table offset 0x%.4X", | |
238 | op->common. | |
239 | aml_opcode, | |
240 | (u32) | |
241 | (ACPI_PTR_DIFF | |
242 | (aml_op_start, | |
243 | walk_state-> | |
244 | parser_state. | |
245 | aml_start) + | |
246 | sizeof(struct | |
247 | acpi_table_header)))); | |
7f0c826a LM |
248 | } |
249 | } | |
4d0b4af9 MK |
250 | break; |
251 | } | |
252 | } | |
7f0c826a LM |
253 | |
254 | /* Special processing for certain opcodes */ | |
4d0b4af9 MK |
255 | |
256 | switch (op->common.aml_opcode) { | |
257 | case AML_METHOD_OP: | |
258 | /* | |
259 | * Skip parsing of control method because we don't have enough | |
260 | * info in the first pass to parse it correctly. | |
261 | * | |
262 | * Save the length and address of the body | |
263 | */ | |
264 | op->named.data = walk_state->parser_state.aml; | |
265 | op->named.length = (u32) | |
266 | (walk_state->parser_state.pkg_end - | |
267 | walk_state->parser_state.aml); | |
268 | ||
269 | /* Skip body of method */ | |
270 | ||
271 | walk_state->parser_state.aml = | |
272 | walk_state->parser_state.pkg_end; | |
273 | walk_state->arg_count = 0; | |
274 | break; | |
275 | ||
276 | case AML_BUFFER_OP: | |
277 | case AML_PACKAGE_OP: | |
9ff5a21a | 278 | case AML_VARIABLE_PACKAGE_OP: |
4d0b4af9 MK |
279 | |
280 | if ((op->common.parent) && | |
281 | (op->common.parent->common.aml_opcode == | |
282 | AML_NAME_OP) | |
283 | && (walk_state->pass_number <= | |
284 | ACPI_IMODE_LOAD_PASS2)) { | |
a62a7117 BM |
285 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, |
286 | "Setup Package/Buffer: Pass %u, AML Ptr: %p\n", | |
287 | walk_state->pass_number, | |
288 | aml_op_start)); | |
289 | ||
4d0b4af9 MK |
290 | /* |
291 | * Skip parsing of Buffers and Packages because we don't have | |
292 | * enough info in the first pass to parse them correctly. | |
293 | */ | |
294 | op->named.data = aml_op_start; | |
295 | op->named.length = (u32) | |
296 | (walk_state->parser_state.pkg_end - | |
297 | aml_op_start); | |
298 | ||
299 | /* Skip body */ | |
300 | ||
301 | walk_state->parser_state.aml = | |
302 | walk_state->parser_state.pkg_end; | |
303 | walk_state->arg_count = 0; | |
304 | } | |
305 | break; | |
306 | ||
307 | case AML_WHILE_OP: | |
308 | ||
309 | if (walk_state->control_state) { | |
310 | walk_state->control_state->control.package_end = | |
311 | walk_state->parser_state.pkg_end; | |
312 | } | |
313 | break; | |
314 | ||
315 | default: | |
316 | ||
317 | /* No action for all other opcodes */ | |
1d1ea1b7 | 318 | |
4d0b4af9 MK |
319 | break; |
320 | } | |
321 | ||
322 | break; | |
323 | } | |
324 | ||
325 | return_ACPI_STATUS(AE_OK); | |
326 | } | |
327 | ||
7f0c826a LM |
328 | /******************************************************************************* |
329 | * | |
330 | * FUNCTION: acpi_ps_link_module_code | |
331 | * | |
9a884ab6 LM |
332 | * PARAMETERS: parent_op - Parent parser op |
333 | * aml_start - Pointer to the AML | |
7f0c826a LM |
334 | * aml_length - Length of executable AML |
335 | * owner_id - owner_id of module level code | |
336 | * | |
337 | * RETURN: None. | |
338 | * | |
339 | * DESCRIPTION: Wrap the module-level code with a method object and link the | |
340 | * object to the global list. Note, the mutex field of the method | |
341 | * object is used to link multiple module-level code objects. | |
342 | * | |
343 | ******************************************************************************/ | |
344 | ||
345 | static void | |
9a884ab6 LM |
346 | acpi_ps_link_module_code(union acpi_parse_object *parent_op, |
347 | u8 *aml_start, u32 aml_length, acpi_owner_id owner_id) | |
7f0c826a LM |
348 | { |
349 | union acpi_operand_object *prev; | |
350 | union acpi_operand_object *next; | |
351 | union acpi_operand_object *method_obj; | |
9a884ab6 | 352 | struct acpi_namespace_node *parent_node; |
7f0c826a | 353 | |
25823e78 BM |
354 | ACPI_FUNCTION_TRACE(ps_link_module_code); |
355 | ||
7f0c826a LM |
356 | /* Get the tail of the list */ |
357 | ||
358 | prev = next = acpi_gbl_module_code_list; | |
359 | while (next) { | |
360 | prev = next; | |
361 | next = next->method.mutex; | |
362 | } | |
363 | ||
364 | /* | |
365 | * Insert the module level code into the list. Merge it if it is | |
366 | * adjacent to the previous element. | |
367 | */ | |
368 | if (!prev || | |
369 | ((prev->method.aml_start + prev->method.aml_length) != aml_start)) { | |
370 | ||
371 | /* Create, initialize, and link a new temporary method object */ | |
372 | ||
373 | method_obj = acpi_ut_create_internal_object(ACPI_TYPE_METHOD); | |
374 | if (!method_obj) { | |
25823e78 | 375 | return_VOID; |
7f0c826a LM |
376 | } |
377 | ||
25823e78 BM |
378 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, |
379 | "Create/Link new code block: %p\n", | |
380 | method_obj)); | |
381 | ||
9a884ab6 LM |
382 | if (parent_op->common.node) { |
383 | parent_node = parent_op->common.node; | |
384 | } else { | |
385 | parent_node = acpi_gbl_root_node; | |
386 | } | |
387 | ||
7f0c826a LM |
388 | method_obj->method.aml_start = aml_start; |
389 | method_obj->method.aml_length = aml_length; | |
390 | method_obj->method.owner_id = owner_id; | |
26294842 | 391 | method_obj->method.info_flags |= ACPI_METHOD_MODULE_LEVEL; |
7f0c826a | 392 | |
9a884ab6 LM |
393 | /* |
394 | * Save the parent node in next_object. This is cheating, but we | |
395 | * don't want to expand the method object. | |
396 | */ | |
397 | method_obj->method.next_object = | |
398 | ACPI_CAST_PTR(union acpi_operand_object, parent_node); | |
399 | ||
7f0c826a LM |
400 | if (!prev) { |
401 | acpi_gbl_module_code_list = method_obj; | |
402 | } else { | |
403 | prev->method.mutex = method_obj; | |
404 | } | |
405 | } else { | |
25823e78 BM |
406 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, |
407 | "Appending to existing code block: %p\n", | |
408 | prev)); | |
409 | ||
7f0c826a LM |
410 | prev->method.aml_length += aml_length; |
411 | } | |
25823e78 BM |
412 | |
413 | return_VOID; | |
7f0c826a LM |
414 | } |
415 | ||
73459f73 RM |
416 | /******************************************************************************* |
417 | * | |
418 | * FUNCTION: acpi_ps_parse_loop | |
419 | * | |
420 | * PARAMETERS: walk_state - Current state | |
421 | * | |
422 | * RETURN: Status | |
423 | * | |
424 | * DESCRIPTION: Parse AML (pointed to by the current parser state) and return | |
425 | * a tree of ops. | |
426 | * | |
427 | ******************************************************************************/ | |
428 | ||
4be44fcd | 429 | acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state) |
73459f73 | 430 | { |
4be44fcd | 431 | acpi_status status = AE_OK; |
4be44fcd | 432 | union acpi_parse_object *op = NULL; /* current op */ |
4be44fcd LB |
433 | struct acpi_parse_state *parser_state; |
434 | u8 *aml_op_start = NULL; | |
73459f73 | 435 | |
b229cf92 | 436 | ACPI_FUNCTION_TRACE_PTR(ps_parse_loop, walk_state); |
73459f73 RM |
437 | |
438 | if (walk_state->descending_callback == NULL) { | |
4be44fcd | 439 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
73459f73 RM |
440 | } |
441 | ||
442 | parser_state = &walk_state->parser_state; | |
443 | walk_state->arg_types = 0; | |
444 | ||
445 | #if (!defined (ACPI_NO_METHOD_EXECUTION) && !defined (ACPI_CONSTANT_EVAL_ONLY)) | |
446 | ||
447 | if (walk_state->walk_type & ACPI_WALK_METHOD_RESTART) { | |
52fc0b02 | 448 | |
73459f73 RM |
449 | /* We are restarting a preempted control method */ |
450 | ||
4be44fcd | 451 | if (acpi_ps_has_completed_scope(parser_state)) { |
73459f73 RM |
452 | /* |
453 | * We must check if a predicate to an IF or WHILE statement | |
454 | * was just completed | |
455 | */ | |
456 | if ((parser_state->scope->parse_scope.op) && | |
4be44fcd LB |
457 | ((parser_state->scope->parse_scope.op->common. |
458 | aml_opcode == AML_IF_OP) | |
459 | || (parser_state->scope->parse_scope.op->common. | |
460 | aml_opcode == AML_WHILE_OP)) | |
461 | && (walk_state->control_state) | |
462 | && (walk_state->control_state->common.state == | |
463 | ACPI_CONTROL_PREDICATE_EXECUTING)) { | |
73459f73 RM |
464 | /* |
465 | * A predicate was just completed, get the value of the | |
466 | * predicate and branch based on that value | |
467 | */ | |
468 | walk_state->op = NULL; | |
4be44fcd LB |
469 | status = |
470 | acpi_ds_get_predicate_value(walk_state, | |
471 | ACPI_TO_POINTER | |
472 | (TRUE)); | |
473 | if (ACPI_FAILURE(status) | |
474 | && ((status & AE_CODE_MASK) != | |
475 | AE_CODE_CONTROL)) { | |
73459f73 | 476 | if (status == AE_AML_NO_RETURN_VALUE) { |
b8e4d893 BM |
477 | ACPI_EXCEPTION((AE_INFO, status, |
478 | "Invoked method did not return a value")); | |
73459f73 | 479 | } |
4d0b4af9 | 480 | |
b8e4d893 | 481 | ACPI_EXCEPTION((AE_INFO, status, |
b229cf92 | 482 | "GetPredicate Failed")); |
4be44fcd | 483 | return_ACPI_STATUS(status); |
73459f73 RM |
484 | } |
485 | ||
4be44fcd LB |
486 | status = |
487 | acpi_ps_next_parse_state(walk_state, op, | |
488 | status); | |
73459f73 RM |
489 | } |
490 | ||
4be44fcd LB |
491 | acpi_ps_pop_scope(parser_state, &op, |
492 | &walk_state->arg_types, | |
493 | &walk_state->arg_count); | |
494 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, | |
495 | "Popped scope, Op=%p\n", op)); | |
496 | } else if (walk_state->prev_op) { | |
52fc0b02 | 497 | |
73459f73 RM |
498 | /* We were in the middle of an op */ |
499 | ||
4d0b4af9 MK |
500 | op = walk_state->prev_op; |
501 | walk_state->arg_types = walk_state->prev_arg_types; | |
502 | } | |
503 | } | |
504 | #endif | |
73459f73 | 505 | |
4d0b4af9 | 506 | /* Iterative parsing loop, while there is more AML to process: */ |
73459f73 | 507 | |
4d0b4af9 | 508 | while ((parser_state->aml < parser_state->aml_end) || (op)) { |
9cf7adec BM |
509 | ASL_CV_CAPTURE_COMMENTS(walk_state); |
510 | ||
4d0b4af9 MK |
511 | aml_op_start = parser_state->aml; |
512 | if (!op) { | |
513 | status = | |
514 | acpi_ps_create_op(walk_state, aml_op_start, &op); | |
515 | if (ACPI_FAILURE(status)) { | |
516 | if (status == AE_CTRL_PARSE_CONTINUE) { | |
73459f73 RM |
517 | continue; |
518 | } | |
519 | ||
4d0b4af9 | 520 | if (status == AE_CTRL_PARSE_PENDING) { |
73459f73 | 521 | status = AE_OK; |
73459f73 RM |
522 | } |
523 | ||
22b5afce BM |
524 | if (status == AE_CTRL_TERMINATE) { |
525 | return_ACPI_STATUS(status); | |
526 | } | |
527 | ||
4d0b4af9 MK |
528 | status = |
529 | acpi_ps_complete_op(walk_state, &op, | |
530 | status); | |
4be44fcd | 531 | if (ACPI_FAILURE(status)) { |
4d0b4af9 | 532 | return_ACPI_STATUS(status); |
73459f73 RM |
533 | } |
534 | ||
4d0b4af9 | 535 | continue; |
73459f73 RM |
536 | } |
537 | ||
ab6c5733 | 538 | acpi_ex_start_trace_opcode(op, walk_state); |
73459f73 RM |
539 | } |
540 | ||
73459f73 RM |
541 | /* |
542 | * Start arg_count at zero because we don't know if there are | |
543 | * any args yet | |
544 | */ | |
545 | walk_state->arg_count = 0; | |
546 | ||
9cf7adec BM |
547 | switch (op->common.aml_opcode) { |
548 | case AML_BYTE_OP: | |
549 | case AML_WORD_OP: | |
550 | case AML_DWORD_OP: | |
551 | case AML_QWORD_OP: | |
552 | ||
553 | break; | |
554 | ||
555 | default: | |
556 | ||
557 | ASL_CV_CAPTURE_COMMENTS(walk_state); | |
558 | break; | |
559 | } | |
560 | ||
73459f73 RM |
561 | /* Are there any arguments that must be processed? */ |
562 | ||
563 | if (walk_state->arg_types) { | |
52fc0b02 | 564 | |
73459f73 RM |
565 | /* Get arguments */ |
566 | ||
4d0b4af9 MK |
567 | status = |
568 | acpi_ps_get_arguments(walk_state, aml_op_start, op); | |
569 | if (ACPI_FAILURE(status)) { | |
4be44fcd | 570 | status = |
4d0b4af9 MK |
571 | acpi_ps_complete_op(walk_state, &op, |
572 | status); | |
4be44fcd | 573 | if (ACPI_FAILURE(status)) { |
4d0b4af9 | 574 | return_ACPI_STATUS(status); |
73459f73 | 575 | } |
73459f73 | 576 | |
4d0b4af9 | 577 | continue; |
73459f73 RM |
578 | } |
579 | } | |
580 | ||
581 | /* Check for arguments that need to be processed */ | |
582 | ||
a62a7117 BM |
583 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, |
584 | "Parseloop: argument count: %u\n", | |
585 | walk_state->arg_count)); | |
586 | ||
73459f73 RM |
587 | if (walk_state->arg_count) { |
588 | /* | |
589 | * There are arguments (complex ones), push Op and | |
590 | * prepare for argument | |
591 | */ | |
4be44fcd LB |
592 | status = acpi_ps_push_scope(parser_state, op, |
593 | walk_state->arg_types, | |
594 | walk_state->arg_count); | |
595 | if (ACPI_FAILURE(status)) { | |
4d0b4af9 MK |
596 | status = |
597 | acpi_ps_complete_op(walk_state, &op, | |
598 | status); | |
599 | if (ACPI_FAILURE(status)) { | |
600 | return_ACPI_STATUS(status); | |
601 | } | |
602 | ||
603 | continue; | |
73459f73 | 604 | } |
4d0b4af9 | 605 | |
73459f73 RM |
606 | op = NULL; |
607 | continue; | |
608 | } | |
609 | ||
610 | /* | |
611 | * All arguments have been processed -- Op is complete, | |
612 | * prepare for next | |
613 | */ | |
4be44fcd LB |
614 | walk_state->op_info = |
615 | acpi_ps_get_opcode_info(op->common.aml_opcode); | |
73459f73 | 616 | if (walk_state->op_info->flags & AML_NAMED) { |
941f48bb LM |
617 | if (op->common.aml_opcode == AML_REGION_OP || |
618 | op->common.aml_opcode == AML_DATA_REGION_OP) { | |
73459f73 RM |
619 | /* |
620 | * Skip parsing of control method or opregion body, | |
621 | * because we don't have enough info in the first pass | |
622 | * to parse them correctly. | |
623 | * | |
624 | * Completed parsing an op_region declaration, we now | |
625 | * know the length. | |
626 | */ | |
4be44fcd LB |
627 | op->named.length = |
628 | (u32) (parser_state->aml - op->named.data); | |
73459f73 RM |
629 | } |
630 | } | |
631 | ||
632 | if (walk_state->op_info->flags & AML_CREATE) { | |
633 | /* | |
ba494bee | 634 | * Backup to beginning of create_XXXfield declaration (1 for |
73459f73 RM |
635 | * Opcode) |
636 | * | |
637 | * body_length is unknown until we parse the body | |
638 | */ | |
4be44fcd LB |
639 | op->named.length = |
640 | (u32) (parser_state->aml - op->named.data); | |
73459f73 RM |
641 | } |
642 | ||
ef805d95 LM |
643 | if (op->common.aml_opcode == AML_BANK_FIELD_OP) { |
644 | /* | |
645 | * Backup to beginning of bank_field declaration | |
646 | * | |
647 | * body_length is unknown until we parse the body | |
648 | */ | |
649 | op->named.length = | |
650 | (u32) (parser_state->aml - op->named.data); | |
651 | } | |
652 | ||
73459f73 RM |
653 | /* This op complete, notify the dispatcher */ |
654 | ||
655 | if (walk_state->ascending_callback != NULL) { | |
4be44fcd | 656 | walk_state->op = op; |
73459f73 RM |
657 | walk_state->opcode = op->common.aml_opcode; |
658 | ||
4be44fcd LB |
659 | status = walk_state->ascending_callback(walk_state); |
660 | status = | |
661 | acpi_ps_next_parse_state(walk_state, op, status); | |
73459f73 RM |
662 | if (status == AE_CTRL_PENDING) { |
663 | status = AE_OK; | |
73459f73 RM |
664 | } |
665 | } | |
666 | ||
4d0b4af9 MK |
667 | status = acpi_ps_complete_op(walk_state, &op, status); |
668 | if (ACPI_FAILURE(status)) { | |
4be44fcd | 669 | return_ACPI_STATUS(status); |
73459f73 RM |
670 | } |
671 | ||
4be44fcd | 672 | } /* while parser_state->Aml */ |
73459f73 | 673 | |
4d0b4af9 | 674 | status = acpi_ps_complete_final_op(walk_state, op, status); |
4be44fcd | 675 | return_ACPI_STATUS(status); |
73459f73 | 676 | } |